Evaluation of foam-glass media in a high-rate filtration process for the removal of particulate matter containing phosphorus in municipal wastewater

Tae Un Jeong, Kyoung Hoon Chu, Sung Jo Kim, Jieun Lee, Kyu Jung Chae, Moon Hyun Hwang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Foam-glass as an effective filter media in a high-rate filtration process was evaluated for the removal of particulate matter containing phosphorus in municipal wastewater. The foam-glass with a low sphericity exhibited a higher porosity (60.2%) and a lower apparent specific gravity (0.50 g/cm 3 ) compared with a conventional sand media (35.1% and 1.19 g/cm 3 ). In particular, the high porosity of the foam-glass increased its surface area for capturing particles with coagulation, leading to a significantly decreasing head loss in the filtration bed column, resulting in a significantly longer filtration duration (more than 2 times) and a slightly higher removal of contaminants (approximately 4.8% for a suspended solid and 2% for the total phosphorus). Additionally, while backwashing of the conventional sand media required about 30% of the bed volume, the low specific gravity of the foam-glass media could be expanded to 100% of the volume due to its lower energy demand. Based on these advantages, it is expected that the foam-glass media will have a vital role as an alternative media in high-rate filtration processes.

Original languageEnglish
Pages (from-to)159-166
Number of pages8
JournalJournal of Environmental Management
Volume239
DOIs
Publication statusPublished - 2019 Jun 1

Keywords

  • Foam-glass media
  • High-rate filtration
  • Municipal wastewater treatment
  • Suspended solid
  • Total phosphorous

ASJC Scopus subject areas

  • Environmental Engineering
  • Waste Management and Disposal
  • Management, Monitoring, Policy and Law

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